Magnetic resonance imaging method and device

A magnetic resonance imaging device, comprising:

• at least one processor;
• and
• a memory configured to store machine readable instructions corresponding to a control logic for magnetic resonance imaging;
• wherein the processor is configured to read the machine readable instructions in the memory and execute the instructions to perform operations comprising:
• obtaining undersampled k-space data as a first partial k-space data by scanning a subject in an accelerated scanning manner;
• generating a first image by performing image reconstruction for the first partial k-space data according to a trained first deep neural network and an explicit analytic solution imaging algorithm;
• obtaining mapped data of complete k-space by mapping the first image to k-space;
• extracting second partial k-space data from the mapped data of complete k-space, wherein the second partial k-space data is distributed in the k-space at a same position as the first partial k-space data in the k-space;
• obtaining a residual image by performing image reconstruction according to the first partial k-space data and the second partial k-space data;
• and
• generating a magnetic resonance image of the subject by adding the first image with the residual image.